Cobbectrktg dettcce fob floob contboll



Apr. 24, 1923. 1,452,490

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS Filed April 14, 1921 9 Sheets-Sheet 1 Apr. 24, 1923.

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS 1921 9 Sheets-Sheet 2 Filgd April 14 I WW31W M W -W Apr. 24, 1923.

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS Filed April 14. 1921 9 Sheets-Sheet 5 n M O Q-Q aMWZf-Imnmtou Apr. 24, 1923.

J. E- BOYCE comwc'rms DEVICE FOR FLOOR com'noums Filed April 14, 1921 9 Sheets-Sheet 4 llllllllllllllllIlllllllllllllllllll! Apr. 24, 1923.

J. E. BOYCE CORRECTING DEVICE FOR FLDOR CONTROLLERS Filed April 14 1921 9 Sheets-Sheet 5 Apr. 24, 1923. 1,452,490

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS Filed April 14. 1921 9 Sheets-511mm- 8 Apr. 24, 1923.

J. E. BOYCE CORRECTING DEVICE FOR moon CONTROLLERS Filed April 14, 1921 9 Sheets-Sheet 7 Snuwwtoz fi? on/ Apr. 24, 1923. 1,452,490

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS Filed April 14 1921 9 Sheets-Sheet 8 UTIITT] Apr. 24, 1923. 1,452,490

J. E. BOYCE CORRECTING DEVICE FOR FLOOR CONTROLLERS Filed April 14. 192]. 9 Sheets-Sheet 9 llllllllllllllllllllllIllIlllllllllllllllllllllllllll anvmllo c Q7 GUM/me 2L4 37 if xx 6%- Patented Apr. 24, 1923.

UNITED STA TES PATENT OFFICE.

JOHN E. BOYCE, or YONKEBS, .unwzona, assIGNon T o'rxs ELEVATOR COMPANY, or JERSEY CITY, NEW JEnsnY, A CORPORATION or NEW JERSEY.

connnc'rrnsnnvros ron FLOOR CONTROLLERS.

Application filed April 14, 1921. Serial No. 461,382.

To all whom it may concern: Be it known that 1, Joan E. Boron, a citizen of the United States, residing in Yonkers, in the county of \Vestchester and State of N ew York, have invented a new and useful Improvement in Correcting Devices for Floor Controllers, of which the follow ing is a specification.

My invention relates to improvements in electric control systems for use with electric traction elevators having a. floor controller. The improvement is not however entirely confined to this type of elevator,-but niay be used with any other type of, hoisting apparatus for the-purpose set forthhereinafter. The invention is shown hereinapplied to what is commonly known as an automatic push-button elevator system. i

In an electric elevator systempcommonly known as a traction ele\'ator, whe re.,afriction or traction sheave onzthehoisting motor shaft directly imparts motion to the ele vator car and counterbalance, there isoccasional slipping or creeping of,-the-cables in a floor controller which is customary when employing a push button system. of-circuits to operate the: machine, any; slippin'g or creeping of the cables obviouslya'esults-in a change or displacementfof?the :fioor controller in the m achinewith the .car; position in the hatchway, with a: result that theaccuracy of bringing the car to a landingiis impaired. An object of the pres'ent-.- invention is to provide.- means'whereby-;the,floor controller or apparatus that ,controlsthe stopping of the car-may possess the-proper relation to the position ofthe car so that an exact landing may'always be effected in the operation of the tllt.\'tlt01';- ;v

The invention consists more essentiallyiin the provision of means, automatically operable to control the elevator car in stopping at a landing to ellect an exact or level stop therewith, as of first intention. as itmay be called; the elements involved in accomplishing this result being operable independently of the car speed and load, and being in the form of apparatus auxiliary and ancillary to the elevator apparatus as generally known.

Other objects of the invention and the pre- :isv nature thereof will appear more fully relation to the'hoisti'ng or driving. sheave. \Vhen the hoisting machine is prov dechwith 1 5 a e 32 ntervene-: r .1, Figures 18 19, and,, 2'O,, illust1-ate'a ;'floor .C, is suspended by hoisting igure 1' illustrates a traction elevator, arranged with a typical electric elevator system, including a floor controller, embodying an automatic push-button control, arranged in accordance with the present invention.

Figures 2, 3, l, 5 and 6 illustrate somewhat in detail the floor controller mechanism, with the present invention adapted thereto. v 4

Figure 7 illustrates a fragmentary view of one end of the shaft of the driving motor embodying somewhat in detail the friction sprocket that is used to run the floor controller;

Figures 8, ,9, and 10 show fragmentary views of several. details of thei present in- VBntl0l'l. i

. Figures =illiistrate a floorcm}- .ti'oller mechanisInof a modified. construction usable with the invention shown in .the Fig. 1'.., Figure 12 andFignie 13 tr atetionalgyiews. of Fig: 11 taken on. the line 12-12;.and ,1313 .respectiv1y. f

Figure 1 illustratesv diagrammatically the-invention in a modified formi Figures 15,,16 and lfiillustrate another modification ofa floor eontroller meehanism,

u able w t t ini' i nfill fe dn:

, Figure, a 'sectip ail view of'IEig.

controller mechanism ofa' still ,fui-the'r modilied construction usable with. the: inyentio'n shown in the Ei z. 'l4l Fig. 19 is a. sectional view of Figure liipiicthe line- 19-i -19. j 1

Like reference: characters; denote similar parts inallofthdfiguid: i Referring-now to Fig..1, an' elevator car, cables, 1, which run over. adrivingsheaie. 2 secured to a shaft, 3,;of a motor, MQ Theusuahcounte'rweight, cw t. .is securedto' the ends of the .cablesopposite; to. the car. .An .electromechanical brake of a welhknown type is designated, letter B.- I p Electromagnetic reversing switches to control the motor. M, are designated, R and R; the switch, '3, controls the. motor foir descendin direction of. car ftravehfand the witch. R for ascending direction of travel. A potential. switch is designated by lettcr,P-. I

The automatic. push-button apparatus "OIHPI'lSQS car push-buttons, 4, 4'. 4r". hall push butlons, 5, 5', 5'.'., floor switches, 6, (Sf,

6". a" non-interference switch, 7, a car hold ing switch, 8, door contacts, 9, and a floor controller, F; the latter may be of the usual well-known construction. as illustrated in the Figures 5 and 6, and operated in the usual way to control the various circuits of the push-button system.

In my invention I employ what i may term a correcting device, D, and which will be better understood from the description by referring to Figures 2 and 3. which show its design, and also its position of mounting referable to the floor controller.

cferring to Figs. 2 and 3, the show the device fastened to an angle iron. 10, which is bolted to a. plate, 11, the latter being fastened to the floor controller, F. The device comprises a base plate, 12, to which is fastened an electro-magnet, 13. There is a magnet winding. 14, of the magnet, and an armature, 15, pinned at 16 to a lever 17; the lever is also pinned at 18 to the base plate, 12, the lever being, free to turn. and is held in place by a cotter-pin, (not shown). To the other end of the lever is pinned a rod, 19, held in place by cotterpins (not shown). To the rod, 19, is fastened an adjusting block, 20, by screws, 21, the latter also serving to hold to the adjusting block, 20, a distance piece, 22, which will be referred to hereinafter. To the adjusting block, 20, are fastened pawls. 23. There are slotted holes in the adj listing block, see Figs. 8 and 9, through which the pa-wls are fastened by bolts, 24, see Figs. 2 and 3, to permit adjustment of the pawls. The rod, 19, is held in place and guided by a slot, formed by fastening a strip, 25, to the base plate, 12. A chain block stop, 26. is used in conjunction with the other parts of my device. It is fastened to the floor controller driving chain, 27, which runs over a. sprocket, 28, on the floor controller. F, and another sprocket, 29, which is mounted on the shaft, 3, of the motor. M.

The floor controller illustrated in Figs. 4. and 6. briefly stated, comprises a rock shaft, 30. operable in unison with the movement of the elevator car, C, through the intermediation of a gearing, 31, and other con nections hereinafter described. There are rocker arms, 32, 32', 32". 32", carried b v the shaft, 30, these arms being adapted to actuate switches. 33, 33, 33". 33", respectively. The switches 33, 33". control the car in descending, being opened by their respective arms when rocked in a clockwise direc' tion, which corresponds to the descending direction of car travel, and are closed by the movement of the said arms in an anticloclc wise direction. The switches. 32. 32", control the car in ascending, being opened by their respective arms when the latter rock in an anti-clockwise direction and closed by the rocking of the said arms in a clockwise direction. It will be mentioned that two of the switches are provided, one for the bottom and one for the top landing, L, L", and two of the switches for the intermediate landing L. Each switch, such as 3 for example, comprises a pair of separated depending contact strips, 34, 34'. s cured to. but insulated from, the controller framework 35. A conductor, 36, is adapted to bridge the strips, 34., 34', and thereby close the circuit of the said contacts at that point. The conductor, 36, is carried by, but insulated from, an arm, 37, adapted to rock on a fixed rod, 38. The arm is provided with a member, 39, through the intermediation of which the arm is rocked in reveisc direction by engagement with a roller, 40, carried by the rocker arm, 32.

To one side of the floor controller, F, is fastened a switch, A, as shown in Fig. 6. Briefly stated, the switch consists of a movable membcr, 41, and. a stationary member, 42. To the member, 41, is aflixedan electrical contact, 43, suitably insulated fromthe arm, and to the contact is fastened an electrical conductor cable, 44, the other end of the cable being fastened to a terminal, 45. on the stationary member, 42, ofthe switch. To the lower end of the switch arm is affixed a roller, 46. Mechanical contact engagement of the roller, 46, with a cam, 47, aflixed to the rocker shaft, 30, opens or closes the switch, as the case may be. The closing of the member, 41, makes contactengagement with an electrical contact, 48, affixed to the stationary member of the switch. This'contact is also suitably insulated. A spring, 49, is also part of the switch which helps the member, 41, to close when the roller, 46, falls iiito a recess in the cam, 4 by virture of the turning of the cam on the rocker shaft, 30, thereby insurin 'a better electrical contact between the contacts or the switch.

Referring to Fig. 7, there is illustrated therein as a fragmentary view. one end of the shaft, 3, of the motor. M, shown partly in detail. and upon which is afiixeda friction device which is used in conjunction with the invention and, briefly stated. consists of a stud. 50, rigidly screwed to the end of the shaft, 3. Mounted on the stud is the sprocket wheel, 29, washers 51 and 52, the latter being keyed to the stud, 50. bv a key, An expansion spring, 54-. whose continual action on the washers causes the sprocket to turn in normal conditions, when the shaft, 23, rotates through the revolving of the motor, M, by virtue of the contact of the washers, 52, with the washers. 51. which latter have frictional contact with the sprocket wheel. The pressure of the spring upon the washers is governed b v the turnin; of a lock nut, against ()lll Hit lIHI

of the surfaces of a washer, 56, which latter on its opposite side has contact with the spring. A pin, 57, is employed to prevent the turning of the stud, 50, should it become loose in the shaft, 3,

Referring toFigs. 8 and 9, they illustrate in different views one-of the elements used in'my invention in a fragmentaryform. The element is not shown entirely assembled in these views, for the sake of clearness. In Fig. 8 is shown the adjusting block-20, with its slotted holes, spoken of heretofore, to allow the adjustingot the pawls, 23; This adjusting and reason' for the same will he explained later. The-distancepiece, 22, is fastened to the adjusting block, 20, by means of the screws, 21, which also serve to hold the rod, 19, to the adjusting block; as has heretofore been stated. The distance piece serves to prevent any turning of the pawls,

the gap between' them,

and also completes Fig.

making one surface, as'shown -in This distance piece-22, mayvary in size, as will be explained later. I

Fig. 10 illustrates a part of the'chain, 27, and the chain block' s'top, 26. Th s chain block stop may l e-made a part "of the chain by substituting it for one=of the blocks between any two links, v

The diagrammatic illustration of the floor controller F in'Fig. I, consists of two'segmeats, 58, and 59,'adapted to make contact with stationary brushes-60,61,- 62, 63ahd 64, the brushes, 60'and 61, being'connected to the windings of'the reversiiig'switches, R; R, respectively.- Thecontact segments may be mounted upon' a suitable 'insulatin base as described iri-connection -with Figs, 5 and 6, and rotated' in-nnisonw-ith the hoisting motor of'the' elevat'or"car'througli the driving chain connection -ibetween the floor controller sprocket" and the motor. as described in connecti'om'with' FigsQ-"andfi.

The operation of 'the elevator willnow=be described, and since the" system ofcircuits is well known, itwill -be 'described' only briefly.

In Fig. 1 the car is at rest at the-basement landing, which I have de'signated'by'L', the operating circuit being broken'afi the brush, 64, of the Floor controller, I Let'it be assumed that the car button' t" in the car C, is pressed, this servin 'to close a circuit for the winding of the reversing'switch R as follows: main, wire 65,- wire- 66, through the winding of the reversing switch R, wire 67, brush 61, segment 58, brush 62, wire 68, through the winding of the floor switch 6', wire 69, wire 70; wire 71, button 4", wire 72, wire 73, through the winding of the car holding switch, 8, wire 74, through the uppermost winding of the non-interference switch 7, wire 75, door contacts 9, to the main. The reversing i switch R will now close, and effect the release of the brake-B and the operation of the motor M, to operate the car in an ascending' direction. Operation of-the cal in an ascending direction effects rotation of the of the floor controller, as in sprocket, 28, Fig;5,-in a clockwise direction, the segments 58 and 59 which co-relate to the rocker 9 of the above mentioned switches, another circuit was also made from the main wire 76,-wir'e 77, through the contacts of the car holding magnet, (as we said they are closed), wire 73, through the windings of the car holding and non-interference switches to the main as stated above.

This last mentioned circuit completes what is known as the car holding circuit, wellknown ito those versed in the elevator art, its completion preventing anybody else from operating the car from either the car or hall until the operation that is already taking place=is completed by the arrival of the car at its predetermined landing and the opening of the door contacts by the o 'ening of the door.

From the above description, it will be seen that-the floor controller functions to control the car in its movement after a car button 'is pressed automatically to'stop the car at the desired landing. The door controller also functions to control the car in stopping at a desired floor landing in a. similar'manner by pressing a hall button.

For a-descending direction of car travel, the contact segments 58 and 59 and rocker shaft 30 will rotate in a clockwisedirection.

It may be observed at this point that in the operation of the elevator, creeping and slipping of the cables may occur, and therefore, the actionof the correcting device will now be described; It will be understood that in'order for the correcting device to restore the floor controller to its correct po sition relative to the car, it is necessary that the relative position of the floor controller shall be ahead of the car at the moment the correcting device begins to perform its correcting operation; therefore, should the floor controller happen'to be behind the car, the correcting device will not begin to perform its operation of corre ting the position of the floor controller until after the direction Thus when the i lllll ll'IT) llU lilo

'of travel of the car has been reversed. In

ascending direction.

betweenlthe motor and the floor controller,

.As has been stated, there is a connection Erwin-the ascending movement of the car; a

{switch E on the car comes in contact with a {cam'Gin the hatchway, opening the contacts of-the switch, but before this has ocfcurred, the roller of the'switch A, mounted .on the floor controller has fallen into the recess of the cam. 47, by virtue ofthe cam turning with the shaft: 30, due to the floor controller being driven by the IHOtOlZmThE dropping of the roller into the recessallows the contacts43 and 48 of the .switch ,Aito complete a circuit from the et imain, wire-:76, through the contacts of switch A,vthey .be-

ing closed at this time, wire 7 8, through the contacts of switch E, wire 79, through the winding 14, of the elcetro-magnet, 13, of the correcting device, D, wire .80, wire '81,

' through the contacts of the switch P, they iii] ' also being closed at this time, to the main.

The magnet 13 will now pull down its armature,l5, which in turn acts to pull down the -;rod, 19, with its pawls, 23., Should the stop block, 26, on the driving chain, 27, come in contact with the 'pawls, 23, the latter will stop the movementof the block, and the chain will-cease to move; the pull of the magnet upon its armature and'in turn'upon the rod and its pawls, is of greater strength than the frictional engagement between the sprocket, 29, on the shaft, 3,,and the washers, 51, and conseqeuntly the pawls stop the movement of the block and the chain. The chain will now remain stationaryguntil the switch Elias been opened by the contact of its roller with the cam G, thereby openings the circuit, deenergizing the winding, 14, and, therefore, removing the downward pull of the armature on the rod, 19. and allowing the stop block to proceed under the pawls, 23. and therefore the chain likewise to resume its movement. 0f course. the stop block has to lift up the pawls before it can proceed underneath them,'as has been stated, but the effort to lift them is not great enough to impede the progress of the block carried on the'chain, which goes to show that when the magnet of the device is ener gized, its downward pull on the rod and the pawls is greater than the frictional engagement between the sprocket, 29, and the wash ers. 51 and 52, and when the magnet isdeencrgized, the frictional engagement between the sprocket. 29. and its washers is greater than the cllort required of the block to lift is out of step with the moving car.

the rod'and its pawls, thereby allowing the chain to travel in accordance with the speed of the motor. This defined explanation illustrates the working of my invention of a correcting device, when the floor controller When there is no slipping orcreeping of the cables. the floor controller is in step with the-car, the stop block on.the chain passes underneath the pawls during the period that the switch on-the car is held open by its contact bythe cam in thehatchway. Should the car be out of step with the floor'controller, the

chain willvbestopped by the block, ,as first above explained. The cam, 47, on the floor controller, which operates the switch A, is

designed to close the saidswitch when the car is on-eitheriside of the cam G in the hatchway; ,(Inotherwords, the interval-of time between the closing of the switch Awon thefioor controller and the opening of the switch E on the car is themeasure of :dis-

tanceeither side-,of the cam G from .that point in the hatchwaythat-th'e car is atthe ,time of the closing of the switch A. This distance is arbitrary and it isiin this: zone,

as we may'eall it; that the correcting device will functiomas .ifithe floor controllerbe out of step at this timethe progress of the stop 1 block, 26,- wil'l' be checked when it reaches, the .pawls, 23, and is stopped by them, as has alreadv been stated; the closing of the saidswitches A and E, establishing the circuit to'the magnet winding, 14, of the such a size and design as to take care-of both of the features just explained. a

It willbe desirous to adapt the length of the cam G to different car speeds. If this is done. the distance apart the nnwls 23 from each other on the correcting device,'D, will also have to be changed. so that the time given for the stop block 26, upon the chain 27, to pass underneath them will be of a value relative to the time required for the car to pass the cam G in the hatchwav. It

is for this reasonthat the adiusting block.

20, of the correcting device, D. is provided with slotted holes, as heretofore mentioned, to allowadjustment of the pawls, and likewise the distance piece, 22, between them will also have to be adjusted to suit.

The correcting device functions in a simi lar manner in the downward motion of the The invention is not limited to function with only one cam in the hatchway; but there may be any other number of cams at-rorilim to the run or travel of the car.

In v:rnany installations, one. cam may be found to be suflicicnt; generally speaking, in'all probability there will be no occasion tovuse more than two cams, (i; one at the top and one at the bottom of the hatchwa In'the-case of. more than the one cam that-I haveshown, changes in the present device wouldhave to bemade to suit the additional hatchway cams, of courseyfor -instanceflanadditional cam 17 on thefloor controlleiuands'witch A would have to be provided. 1 I have shownonly one hatchway cam G. controller .cam 47, and switch A,- for the sake of. simplicity,-; placing the hatchway cam near .the first floorito get as many corirections and r'esettings of the floor. controller as possible in. the operation of the car, as the carinvariably returns to the first floorafter each trip. It, will be observed thatinF ig.'1 the stop-block 26 is shown at the left hand of-ithe pawl 23, and in Fig. 2, tolthe right hand, looking at those figures; itis of -no matter, however, which side of the pawl the; figures happen toshow the block.

Inthe Figures 11, 12 and 13 are shown in different-views a modification of the-present invention as already .statedherei'n. By observing these views -lt.will. beseen' that some partsof the embodiment of the inren' tion are inja'form even more compact than the embodiinentpreviously described.

'As in the previous case, we have the-device mounted updn the floor controller F-,-by means of the angle iron,110; to-which is .fastened the-base 'plate,-12,of the'correcting device. Briefly, there is the electro-magnet,

13, with itscoil, 1-1, the former being fastened to the base plate. 'The armature, 15, is the same as before but at this time is fastened to one-end of the lever, 17,'the other end of the. lever swings-on the fixed pivot. 18.- which is part of the base plate, 12,.and is held in place by acotter pin (not shown). At the center or :thereabouts. of the lever. 17. ispinned the rod. 19,- which .is held in place by-cotter pins (not shown). -This rod asrheretofore is guided in its noveinent by thesslot'forinedby fastening the strips, 25, to the base'plate. To obtain the said slot- I use several bushings. 82. the slot being formed by the strips. 25. bridging these bushings.

There is this ditlerence that the rod. 19, is equipped with a ,spring. 83. which acts against the .downwardpull of the electromagnet. 13. on its armature. 15, so that when the coil. 14. is deenergized the spring acts to li-ft thearmature-up from the magnet, also lifting the rod. 19, up, and from the path of the stop blocks, 26, which in the present modification are alfixed to the inner side of awheel. 84.- as illustrated in Fig. 13. and whose three connecting points, 85, are fastened to the same centers as are those of the sprocket wheel, 28. and to the same sprocket hub, 86, the latter beingv mounted upon a. shaft, 87. and held in place by, a pin, 88. Going baclt to the wheel, 84,- it is provided with a slotted hole. 89, through its entire circumference and by means of which adjustment of the. stop blocks, '26. is obtained.

It maybe well to state at this time that the rod, 19, is not equipped with pawls as in the design first above-described; the rod, 19, itself being designed to engage the stop blocks. 26, alone, contact-of, the rod,-19, -with ,the stop blocks. stops the rotation of the wheel, 84, and also thesprocket wheel,

28, they being connected together as already stated; this discontinuanceof the moving of thesaid wheels in turn causes the sprocket chain, 27, to. cease its travel, the sprocket wheel, 29, on the motor shaft; ,3, functioning as has already been stated herein.

Together with this modification of the correcting device there isused the switch,

A, shown in Fig. 6, the two switches difi'er-- ing in construction only, that-is, the latter switch functions the same as the switch, A, in the Fig. 1, being operated by the cam, 47. imits rotating on the shaft,3(J, as described before. Afibre block, 90, ailixed to ,the base plate. 12, upon whichis mounted the electrical contacts,..48. may be .nnderstood .to represent the stationary .member of the switch, which was designated by 42. in. the first design of the invention,; themovable member being designated b31141, as before. It will be observed that theanember, 41. in this modification is'madeup of two arms. pivoted on a common center, a lower arm, -91, being in back of the base plate, 12, as .shown in Fig. 12, and that the lower end-of the saida-rm is somewhat ball shaped, see Fig. 11. to allow the end of the arm to fall into the recess. of the cam. 47, as before. The spring. 49, is provided to help this action andto insure a positive electrical-contact between the-contact, 43, on.an upper arm, 92. of the member. 41. and the con.- tacts, 48. of the stationary member. 12;.onc end of the spring. being batted against aboss. 93. Formed ongtlie base plate. 12.

An addedfoature to the present modification of the correcting device is the addition of two sprocket wheels..91.and-.95. not embodied in thefirst design. and which are fastened to the base plate at itslower end as illustrated. Their objectis to-direct the chain. 27, to thesprocket-wheel. 28. should occasion require it. I. have employed the sprocket wheel. 95, as an illustration. Should the lead into the sprocket wheel. 28. be the opposite to that shown the wheel. 94. would be used.

Added to the Figs. 12 and 13. are shown a section of a cover, 96. its object beingto en- A In order to avoid complexity in the sereral views I have not shown the leads from the coil, 14, but by referring to Figure 1, it can be readily seen where the leads are to be connected, they lead out of the correcting device through the hole, 97, in its top.

Figure 14, illustrates diagrammatically, the embodiment of a furthermodification of the invention, its construction being more particularly shown in the Figs. 15, 16 and 17. The operation of the several switches which control the motor, -M, is obtained in the same manner as related in the description of Figure 1.

In this modification, the switch, A, as used in the precedingjdesigns, is dispensed with, which will be seen upon referring to Fig. 15. It will-be noticed that inthis case the switch, E, on the car is normally open switch and is not -closed until it engages with thecam, G, in the'hatchway, through the "mo'vement'ofthe carobtained by the opera tion de'scribedwith'reference to Fig. 1. Engagem'ent 'of theoam G, in th'ihatohway, closes the switch, thereby completing a circuit from theplusjniainywi'te, 76,wire. 77, through thecontacts of the switch, E,they being closed-atthistimeywirem, through the coil 1413f the c'orrecting device, wire 80, wire 81, through the contacts of the switch. P. they "being closed at this"tim e, the same as described in reference to Fig. 1, and thence to the minus maim 4 The circuit just described causes the coil. 14; of the electro magnet. '13, to pull down onits'arrn'atu're fi, arid-in tu'rn pull down throd, 19,;into the path of the stop blocks, 26, the latter being affixed to the wheel. Ra. as stated inthe last foregoing modification.

From the aforesaid description of the correcting device it will be seen that the device functions during the time that the car'C. is

assing the'cam G, in the hatchway, and should the floor controller he in errant to ,the position of the car at this time. the floor controller will be corrected to its just posi tion with the car. By virtue of the rod. 19. oft-he correcting, device being pulled down into the path of the two stop blocks, 26. on

,the wheel, 84, contact of one of the stop blocks with the rod, 19, is bad; which one of them being determined by the particular direction of rotation of the floor controller. The contact stops the movement of the floor controller. the wheel, 84, the sprocket wheel. 28, and chain, .27, and they remain in this stopped position until the switch E on the car has been in the hatchway; this disengagement of .course, opens the circuit to the coil. 14. of the electro-magnet, 13, of the correcting device.

the switch, E, on the car with disengaged from the cam (r relieving the downward pull of ture, 15. and in turn the downward pull on the'rod, 19, allowing it to be free to be pulled up and out of the path of the stop block by the action of a spring which will be mentioned hereinafter.

is now in step with the car.

the arma- V From the aforegoing, it will be seen that the floor controller Should there be it no inaccuracy on the part of fioor'controller,

F, with respect to the position of the car in operation previously described, but between i the stop blocks on the wheel,84, one of the stop blocks just clearing the rod, 19. because the floor controller and the car are in step, 8

and when the switch, E, on thecar is dis- 1 engaged from the cam G the rod,19',w-il1=be.;

pulled up and away, the rod, 19, just clearing the other stop block. length of the cam in the hatchway and the distance between the stop blocks of'thecorrecting device are e ual, not in linear units,

but in the matter 0 time as to their operation, to cooperate with each other.

It may be remarked that there 'is no correcting zone, so to speak, on either side of. the cam, G, in the hatchway, as is the case in the operation of the OOII'GCtiHgFdQViCG in the design first described, which was-necessery' in'the'employment of the switch,-:A, on the- The effective floor controller. The' switch'on the carengaging the cam in the hatchway opened the circuit to the coil of the'electro-magnet of the correcting device in the former-lease, thecorrecting of the floor controller in respect toposition of the ear in thehatchwayv hav--.

'the

ing taken place before'the switch/on the car engaged the cam in the-hatchway, as has i already been stated. But'inthe present modification of the inventiomengagement of" the switch on the car with the cam in the" hatchway closes the said switch, completing the circuit to the coil, 1%, of the electro-maga net, 13, of the correcting device, D, the correcting of the floor controller with-respect to the position of the car in the hatchway taking place at that time.

As the construction of the embodiment of the modification of the invention shown in Figures 15, 16 and 17 diflers very little from the modification shown in Figures 11,- 12 and 13. only those points thatdifl'er will now be mentioned. 7

As before. the armature, 15, of the electromagnet, 13. is pinned at 16. to an end of the lever. 17. the other end of the lever being pinned at 18, and swings. At this point, the lever. 17. carries an'arm. 97. equipped at its end with a boss, 98. to permit the spring. 83. to be placed over it.

, At' 'the" lower end of i the rod, 19, is pinned a bell-crank lever, 99, and which swings on a fixed pivot, 100. To an arm, 101, 01 the bell-crank lever there is another hossto permit the end of the spring, 83, opposite to the end placed on the boss, 93, of the arm, 97,015 the lever 17, to be placed over it. To an arm, 102, of the bellcrank lever, 99, is afiixed a finger 103. This finger comes in contact with the electro-magnet, 13, when its coil, 14, is deenergized. as pictured in the Figure 15. The lifting up of the rod and out of the path of the stop blocks, 26, on the wheel, 84, is caused by the spring, '83, acting between the arm, 97, of the lever, 17,

' and the ar1n, 101, of the bell-crank lever, 99.

This action also causes the armature, 15, of the electro-magnet to be raised, as will be seen by the means of connection. It is during this action that the finger, 103, of the arm, 102, of the bell-crank lever, 99, is brought up against the electro-magnet and impedes any further progress that the spring, 83, might have upon the arm, 97, of the lever and the arm, 101, of-the bell-crank lever.

'The distance that the rod, 19, is raised 'is sufiicient for it to clear the stop blocks, 26,

on the wheel, 84.

Fastened to the base plate,;-12, is a fibre block, 104, used as ,a terminal board for the leads of the coil, 14, they being fastened to terminals, .105, and-from the terminals other leads are broughtout from the correcting device as stated of the preceding ,modificw tion. The other parts of the present modification are the same as in the first men tioned modification.

In Figures 18. 19 and 20 is illustrated in different views a still further modification, this being a modification of the design illustrated in the Figures 15, 16 and 17 and in all probability the preferred type to be used in its particular service of keeping the floor controller or alike apparatus in step with the moving car. This design is likewise mounted on the floor controller. F, as before, but by means of a plate, 106, fastened to it by bolts, 107. To the plate, 106, is fastened the base plate, 12. of the correcting device by means of bolts, 108.

The electro-magnet, 13, and its coil, 14, are the same as before described. but are fastened to the base plate, 12. in a vertical position as shown in the Figure 18. The armature. 15, is pinned at 16, to an arm. 109. of a bell-crank leverv 110. The lever is pinned at 111, to the base plate, 12, and free to turn. To an arm, 112, of the bell-crank lever, 110. is fastened a stop. 113, which engages the stop blocks, 26, on the wheel. 83.

when cause for the same occurs. A-boss. 114. forms part of the last named arm, 112, of thebell-crank lever. and is adapted to come in contact with the electro-magnet, 13, when .the occasion occurs. similarly as described of thefinger, 103, Figure 15.

The bell-crank lever, 110, is designed and the weight of eacharm, 109 and 112, is of such a value that when the coil, 1 1, is deenergized the arm, 109, will pull the armature, 15, away from the magnet causing the lower arm, 112, to be swung in an upward direction clearing the stop, 113, from the path of the stop blocks, 26, on the wheel, 84', and at the same time the distance between the electro-magnet, 13, and its armature, 15, is not too great but that the pull of the electro-magnet upon its armature by the coil, 14, when energized can draw it to it. i

This last modification is to be used with the system of circuits illustrated in Fig. 14, and as they have already been described, it is not necessary to describe them again. The

other parts of this modification are. the.

the car and floor controller with each'other, where they have been displaced as the result of slippage or creeping of .the car hoisting.

cable, the device comprising means whereby the motion of the floor controller is. arrested until the correct relative position ofthe car and controller is restored. 1

2. In an elevator having afloor controller,

a device to-correct the relative position of the car and floor controller with each other where they have been displaced as the result of slippage or creeping of the hoistin cable, the device comprising means adapted to be actuated by the movement of the car to arrest the motion of the floor controller until the correct position is restored.

3. In an elevator having a floor controller, comprising power transmission means to operate it, a device adapted to correct the relative-position of the car and floor controller in case there is slippage or creeping of the hoisting cable. the device comprising means adapted to be projected into engagement with the floor controller to arrest its motion until the correctrelation between it and the car is restored. i

1. In an elevator having a floor controller, and yielding means to drive the same, a device to correct. theq'elative displacement between the-car and controller caused by slip page or creeping :of the hoisting cable, the said device comprising means to arrest the motion of the said driving means, until the correct relation between the car and con troller is restored.

In an elevator having a fioor controller, and means adapted to operate .it, an electro- 1. In an elevator having a floor controller, a device to correct the relative positiomof,

iii

tit)

responsive apparatus adapted to be operated to correctthe relative displacement between the car and controller caiised by the slippage or creeping of the hoisting cable, comprising an electro-magnet and a circuit thereto, and its armature, the latter adapted, when actuated by the magnet, to arrest the movement of the said driving means oft-he floor controller. until the correct relation between the car and controller has been restored.

6. In an elevator having a floor controller, and ni'e'ans adapted to drive it, ah electro responsive apparatus, adapted to be operated to correct displacement between the car and controller caused by slippage or creeping of the hoisting cable. comprising an electro-magnet, a circuit thereto, an' armathrc, the latter involving a stop mechanism. adapted to be actuated by the movement of the elevator apparatus and armature to stop the said driving means uhtil thecbrre'ct rel ative positions of the car and controller have been restored as the result of the operation of the electro-responsii'e apparatiijs.

7. In an elevator-having a iio'or controller, and driving means for the same, an electrores'ponsive apparatus, adapted to be oper ated to causejthe displacement between the car ahdcontroll'er byslippa'ge or creeping of the hoisting cable to be corrected, comprisingan electro-magnet and itsa'rinature, the latter, when actuated by the magnet, adapted to stop the said driving means, un-

til the said displacement has been corrected.

and a circuit to the said magnet, and a switch adapted to close the circuit by the movement of the elevator apparatus, whereby the magnet may energized.

8. In ah elevator having a floor controller, and a driving means for the same, comprising a rotatable wheel. stop blocks thereon, and an electro-responsive device, including a stopping mechanism the responsive dezvice adapted to be energized by the movement of the elevator apparatus to effect an engagement between the said stopping mechanism and blocks to arrest the rotation of the said wheel. and means to energize the said responsive device.

9. In ah elevator, having a floor controller. and driving means for the same. comprising a. wheel, adjustable angularly atitiut its axis. and a stop block t-hereoh. adjustable circumferentially of the wheel, and a stopping mechanism. the latter and the blocks adapted to engage with each other. andarrest the rotation of the said wheel.

1D. In an elevator having a floor controller. and means to drive the same, comprising a sprocket wheel, a member fast thereto, and adapted to be angularly adjusted with respect thereto, the said member being slotted. and a stop block. adjustable in the slot. circumferentially ot the sprocket wheel; and a shopping member adapted to engage the stop block and hold the sprocket wheel against rotation.

11. In an elevator havihg a floor controller, and means to operate it, an electromagnetically operable device, adapted to engage the means which operate the floor controller, to stop its operation, a circuit to the magnet, including a normally open switch, adapted to be closed by the movement of the elevator apparatus, and thereby cause the magnet to be energized.

12. In an elevator, having a floor controller, and means to operate it, an electromagnetically operable device, adapted to engage the means which operate the floor controller to stop its operation, in case the car and controller are out of step with each other, a circuit to the magnet, and a switch and a cam, adapted to engage each other by the movement of the elevator apparatus, and open or close the said circuit.

13. In an elevator having a floor controller, and means to operate it, an electro magnetically o rabl'e stopping apparatus, comprising a circuit to the magnet and a switch in the circuit, a catch, and a series of movable stop blocks, spaced apart from ea'gh other, the switch being adapted to be operated by the movement of the elevator apparatus, anti cause the magnet to be energized and move tli catch into the path of movement of the stop blocks, and engage one of the blocks, and stop the motioncf the floor controller, when the latter and the car are out of step with each other, by reason of the slippage or creeping of the hoisting cable.

14. In an elevator, having a rotatable flo'or controller, and moving means to operate it, an electro-inagnetically operable stopping apparati s, comprising a circuit to themagnet, a switch in the circuit, a catch, a series of stop blocks, spaced apart'from each other, a cam in the hatchway; adapted to close the switch by the movement of the car, and energize the magnet to cause the catch to engage one of the stop blocks, ih' case the car and controller are out of step with each other, by reason of the slippage or creeping of the hoisting cable, but between the stop blocks if the car and controller are in step with each other, the effective lehgth of the cam and the space between the stop blocks being equal in the matter of time of functioning cooperatively with relation to each other.

15. In an elevator, having a floor con troller. a device to stop the controller when the car and controller are out of step with each other because of slippage or creeping of the hoisting cable, and means whereby, when the car ahd controller are in step with each other, the stopping device is held out of cooperative stopping relation with the controller.

16. In combination with an elevator car";

having a floor controller, a lock for the controller. means operated by the movement of the elevator apparatus for operating the lock.

17. In combination with an elevator car, having a floor controller, a stopping device for the controller, comprising electromagnetic means, and means aflixecl to the hatchway for operating the lock when the car and controller are out of step with each other caused by the slippage or creeping of the hoisting cable.

18. In an elevator with a floor controller and power transmission means to drive it, a stopping apparatus for the floor controller, comprising electro-magnetic means, and means operated by the movement of the elevator apparatus to apply the stopping apparatus, when the car and controller are out of step with each other, and means whereby,

when the car and controller are in step with each other the stopping device will be held in effect out of operative position to stop the controller.

19. In an elevator, having a rotatable floor controller, means between the elevator and the fioor controller adapted to rotate the controller, and an electromagnetically operable means adapted to engage said floor controller operating means, and thereby temporarily arrest the movement of the controller in case the car and controller are out of step with each other by reason of slipping or creeping of the elevator cable, whereby the proper relative adjustment betewen the car and said controller is restored.

In testimony whereof, I have signed my name to this specification.

JOHN E. BOYCE. 

